教师在教学过程中处于组织者的地位,应充分发挥教师的__________作用。
参考答案:主导
—Who is suitable for the new chairperson of the Students’ Union?
—David is. He is ______ enough to come up with new ideas.
A.imaginative
B.humorous
C.modest
D.outgoing
下列物质中属于同分异构体的一组是( )
A.O2和O3
B.CH4和C2H6
C.CH3OCH3和CH3CH2OH
D.1H和2H